troubleshooting Question

query that looks back 12 weeks

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metropiaFlag for United States of America asked on
Microsoft SQL ServerSQL
4 Comments2 Solutions370 ViewsLast Modified:
In my query, I need to look at the last 12 week ending dates, or 12 months in the where clause. Could anyone help me out adding this clause?

My query:

select week_ending as 'Week Ending', 
          avg(roll_change_time)) as 'Average Roll Change Time' 
from roll_change_data
group by week_ending

Thank you much.

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